Pay just now

I'm truly disappointed in there service they offered me a payjustnow service which i was approved for . I went to game just to be told that i cannot use the service they don't except pay stretch I have tried using it online and the only online store that excepted it was toys are us how can you give me credit and i cannot use it online nor in store i have tried ,edgars,takealot,superbalist,tessa cake i just cannot use the credit i want this sorted out. or just provide me with a settlement letter to close this account .